Bobbin winder



F. DOUGLAS.

BOBBIN WINDER- APPLICATION FILED FEB- 16, 1921.

1 ,%2 Q3 1 3, Patented July 18, 1922.

2 SHEETSSHEET I.

F'IEQL P. F- DOUGLAS.

BOBBIN WINDER. APPLlCATlON FILED FEB. 16, 192 1.

Patented July 18, 19225.

2 SHEETS-SHEET 2- Y t ps n any: n at! is it at. i ii tarnILirrAmcLnuo-ir nonerns, or MrmvnnosacAnAnA.

BOBBIN WINDER.

I Application filed February T0 aZZ whom it may concern:

Be it known that I, PHILIP FAInoLnUorI DOUGLAS, a subjectv of the Kingof Great Britain, residing at; the town of Minnedosa, in the Provinceof-lVlanitoba v in the Dominion of Canada, have invented certain new anduseful Improvements in Bobbin Wind.- ers, of which the following is aspecification.

This invention refers to improved means for winding the bobbins ofsewing machines,

particularly theheavy dutymachines used by shoe makers for patching.Prior to the present invention the entire attention ofthe operator wasrequired to. be given tothe operation when it became necessary to wind abobbin, it being even necessary tohold the spool from which the threadwas drawn and to guide the same as it was wound upon the .7 bobbin. Theobject of the present invention is to provide means whereby.v after theend of the thread has been connected with thebobbin no further attentionfrom the operator is required, the several acts of winding whichthethread upon the bobbin, evenly distributing the saidthread as it iswound and the stopping of thebobbing when fully wound;

being automatically performed.

With this object inview the invention re-- sides in the novelconstruction and combina tion of parts hereinafter first fully describedin the following specification and then more particularly pointed out inthe appended claims, reference also being had to the draw ings formingpart hereof in whichsimilar characters of reference indicate similarparts throughout the different views, and in Fig. 1 isan end elevationof-a portionof a sewing machine showing thedevice con nected therewithand independently *bclt driven from the shaft of the sewing machine. p

Fig. 2 is a front elevation of the device and its connection with thesewing machine. Fig. 3 .is a plan sectional view taken upon the plane ofthe line 33 in Fig. 1.- I

Fig. 4; is the bobbin winding apparatus as viewed in the directionindicatedby the line 4.--4 in Fig. 1.

Fig. 5 isan end elevation of the device i connection with a sewingmachine, this being a modification in that the bobbin winderSpecification of Letters Patent.

16, 1921 Serial No. 445,529.

Fig. 6 is a front side elevationofthe device shown inFig. 5. i

Fig. 7 is, an enlarged top plan view of the spoolholding part of themechanism and the thread tensioning device thereon.-

' Fig. 8 is an enlarged end elevationof the spool holder and tensioningmechanism viewed in the directionindicated-by theline Fig, 9 is anenlarged end elevationof the. bobbin winding mechanism, andshowing thesewing machine.

Fig. 10 is a rear side elevation of the bob bin winder as viewed in thedirection of the line 10+-10 in Fig. 9.

Fig. 11 is anend View of the thread distrlbuting and bobbin stoppingmember;

Fig. 12 is; a side view of the member shown in Fig. 11.

In the present. disclosure the device is shown in suitableform fordetachable connection with sewing machines of standard: design, so thatusers of suchmach'ines may obtain the benefits of the invention withoutany change whateverjin the construction of their said machines, it willhowever be obvious to persons familiar with the art that the mechanismcan be advantageously adapted in new constructions to form an integralpart of thesewingmachinestructure.

In the drawings A indicates so much of a clamp used to det achablyconnect it with the sewing machine of standard design as is nec- 1 toptoengage the under side of the said top.

A. pedestal '17 rises. from the base member 13 and a spindle 18 isrotatably journalled Patented uly 3L8,,192%,

in thepedestal, the spindle. being preferably v of slightly taperedconformation so that a bobbin 19 may be placed thereon, and heldbyfrictional contact to rotate in unison with the spindle, a ;ulley-20-on the spindle connected by a be t Zlwith the shaft 22 ofthe stitchingmechanism of the sewing machine A, providing means for. the.rotationofthe spi le I A member 23. has its'lowerend connectedbifurcated to form an inverted V shaped..

opening 26 in the face of the hood, the apex of the opening 26 beingcontinued to form an upwardly extending slit 27.

The arm supporting pedestal 28 of the sewing machine B, is mounted upona plurality of legs 29, and the spool holder G comprises a base 30,adapted to lie fiat upon the top 14' of the sewing machine, the base 30being shaped to provide a recess 31 adapted to snugly receive one of thelegs, 29 and to be thereby removably maintained in position upon the top14.

A spindle 32 projecting vertically from thebase 30,is adapted to receivea spool of thread33 rotatively thereon, and a plurality of members 34:projecting upwardly from the base 30 in irregular or zig zag formation,have their upper ends shaped to form eyes 35, through which the thread36 passes from the spool 33 to the bobbin, the irregular disposition ofthe members 34 compelling a tortuous course of the tread and creating asuitable tension of theysame, for .bObblIl winding purposes.

37 in licates a stop which serves to re strict the rotation of themember 23 in one direction.

Whenit is desired to wind a bobbin, the end of the thread 36 is drawndown into the slit 38 usually found in the flanged end of.

a bobbin for this purpose. The bobbin is then placed upon the spindle18and the sewing'machine started the thread passing into the bobbin by wayof the opening 26 in the a face of the member 23 and being guidedthereby the said member being free to move upon its pivot 24 from sideto side. As the winding proceeds and the bobbin fills the thread riseshigher and higher'in the opening 26 until finally when the bobbin isfull it reaches and jams in the slit 2? thus stopping rotation of thebobbin and spindle 18. As the power required to wind the bobbin is ofcourse very small the belt 21 is run very slack so that when rotation ofthe bobbin ceases the belt may either continue to run idly over thepulley 20, or it may cease movement and stand idle upon the shaft 22.When the filled bobbin is required for use in the sewing machine the"threadis cut by the operator, the member 23 is rotated'on its pivot2into the position indicated by the dotted lines in Fig. 4, when thebobbin may be removed from the spindle. The variation shown in'Figs. 5and 6 refers only to 1 the method of driving the spindle, a frictionpulley 38 being mounted onthe said spindle in driving contact with thebelt 39 by which the sewing machine itself is driven. In all otherrespects the devices are similar and when the bobbin is full thepulley38 which rests lightly against the belt, simply stands still untilthe bobbin is removed.

From the foregoing description it will be seen that the member Gprovides for the holding of the spool from which the thread i is drawntothe bobbin under tension by reason of its passage through the eyes 35of the members 34, while the member 23 of the part B provides in simpleform the means by which the thread is. distributed onthe bobs bin, andthe said bobbin prevented from further rotation when fully wound.

Having thus fully described mysaid in-v vention what'I claim is- 1. Adevice ofthe kind described comprising i a suitably supported spindleadapted to receive a bobbin in intimate relation therewith, a memberforming a hoodover the bobbin, an opening in the faceof the hood, meansto feed thread to the bobbin through the opening in the hood, means torotate the spindle from the sewing machine to fill the bobbin and a slitupwardly directed from the opening in the hood in which the thread jamsto stop rotation of the spindle when the bobbin is full. I

2. A device of the kind described comprising a suitably supportedspindle adapted to receive a bobbinv in frictional engagement therewith,a member pivotally mounted for restricted lateral movement forming ahood over the bobbin, an invertedlflshaped opening formed in theextremity of the hood member permitting entrance of the thread to thebobbin, means to rotatethe spindle from the sewing machine to fill thebobbin, and a slit upwardly directed from the apex of the opening in thehood in which the thread arms when the bobbin of the spindle. I l

3. A device of the kind described comprising a base, and means toremovably clamp the base to a sewing machine top, a pedestal rising fromthe base, a spindle suitably supported from the pedestal adapted toreceive a bobbin, a member pivoted to the structure and having a portionshaped to form a hood normally positioned over the bobbin, an invertedV-shaped opening formed in the extremity of the hood constituting anentrance for thread to the bobbin, means to rotate the spindle from thesewing machine to fill the bobbin and a slit connected with the openisfull to stop rotation ing in the hood in which the thread jams.

a spindle, a spindle rotatably supported from the structure,'adapted toreceive abobbin, means to rotate the spindle frqm the sewing machine,and means to evenly distribute thread to the bobbin, and tostop rotationof the spindle when the said bobbin has been filled, said last meanscomprising a member having a vertical portion pivoted to the structurefor limited lateral movement merging into a curve constituting a hoodover the bobbin, the hood portion being bi-

